Piezoelectric sounding component

1. A piezoelectric sounding component comprising: a diaphragm including a substrate and a vibration element having a piezoelectric plate and a pair of electrodes disposed on opposing surfaces of the piezoelectric plate, which is configured to vibrate when a voltage is applied to the pair of electrodes; a case that includes a case body having an opening and a lid disposed to close the opening of the case body, such that the diaphragm is disposed in an interior space thereof; and two pin terminals disposed on the lid and in contact with the diaphragm, wherein at least one pin terminal of the pin terminals includes an extended portion that extends from the interior space towards an outside thereof, an extension portion that extends along a main surface of the lid in the interior space, a rising portion that rises from the extension portion, and a contact portion at an end of the rising portion that contacts the diaphragm, wherein a fixing portion is configured to fix a position of a first bent portion of the at least one pin terminal between the extended portion and the extension portion, wherein a guide portion is in contact with a second bent portion of the at least one pin terminal that is between the extension portion and the rising portion, the guide portion having two wall portions that are crimped towards each other and do not contact each other such that the second bent portion is disposed therebetween and the guide portion is configured to guide a posture of the at least one pin terminal, and wherein the fixing portion and the guide portion are on a surface of the lid that faces the interior space.

2. The piezoelectric sounding component according to claim 1, wherein the two pin terminals are in direct physical contact with the diaphragm.

3. The piezoelectric sounding component according to claim 1, wherein the fixing portion is configured to direct at least an orientation of the contact portion of the at least one pin terminal in a plan view of the main surface of the lid.

4. The piezoelectric sounding component according to claim 1, wherein the guide portion is configured to direct at least an orientation of the contact portion of the at least one pin terminal in a direction intersecting the main surface of the lid.

5. The piezoelectric sounding component according to claim 1, wherein the fixing portion and the guide portion are disposed at different positions in a plan view of the main surface of the lid.

6. The piezoelectric sounding component according to claim 1, wherein the guide portion is disposed at a position nearer to a circumferential edge of the main surface of the lid than the fixing portion.

7. The piezoelectric sounding component according to claim 1, wherein the lid has at least one through-hole in which the pin terminals are inserted, and the fixing portion is disposed around an opening of the through-hole of the lid.

8. The piezoelectric sounding component according to claim 1, wherein the fixing portion has a fixing portion gap for inserting the pin terminals.

9. The piezoelectric sounding component according to claim 8, wherein the guide portion is disposed at a position away from a line on which the fixing portion gap extends in a plan view of the main surface of the lid.

10. The piezoelectric sounding component according to claim 9, wherein the guide portion has a guide portion gap for inserting the at least one pin terminal, and a line on which the guide portion gap extends intersects the line on which the fixing portion gap extends in a plan view of the main surface of the lid.

11. The piezoelectric sounding component according to claim 1, wherein the two pin terminals are configured to apply an alternating voltage to the pair of electrodes of the vibration element.

12. The piezoelectric sounding component according to claim 1, wherein the lid includes a surrounding wall extending towards the case body and having an inner circumferential surface that extends outwardly from the diaphragm.

13. A piezoelectric sounding component comprising: a case having a case body and a lid coupled thereto to define an interior space with a piezoelectric diaphragm disposed therein, the piezoelectric diaphragm having a pair of electrodes disposed on opposing surfaces thereof; and a pair of pin terminals disposed on the lid and in contact with the diaphragm, wherein at least one pin terminal of the pair pin terminals includes an extended portion that extends from the interior space through the lid, an extension portion that extends along a main surface of the lid in the interior space, and a rising portion that extends from the extension portion and has a contact portion at an end thereof for contacting the diaphragm, wherein the main surface of the lid includes a fixing portion constructed to secure a first bend portion of the at least one pin terminal between the extended portion and the extension portion, and wherein the main surface of the lid further includes a guide portion contacts a second bend portion of the at least one pin terminal that is between the extension portion and the rising portion, the guide portion having two wall portions crimped towards each other with the second bend portion disposed therebetween, such that the guide portion is configured to guide the rising portion towards the diaphragm.

14. The piezoelectric sounding component according to claim 13, wherein the pair of pin terminals are in direct physical contact with the diaphragm.

15. The piezoelectric sounding component according to claim 13, wherein the fixing portion is configured to direct at least an orientation of the contact portion of the at least one pin terminal in a plan view of the main surface of the lid.

16. The piezoelectric sounding component according to claim 13, wherein the guide portion is configured to direct at least an orientation of the contact portion of the at least one pin terminal in a direction intersecting the main surface of the lid.

17. The piezoelectric sounding component according to claim 13, wherein the fixing portion and the guide portion are disposed at different positions in a plan view of the main surface of the lid.

18. The piezoelectric sounding component according to claim 13, wherein the guide portion is disposed at a position nearer to a circumferential edge of the main surface of the lid than the fixing portion.

19. The piezoelectric sounding component according to claim 1, wherein a center line extending in a gap between the two wall portions of the guide portion bends to guide the posture of the at least one pin terminal.

20. The piezoelectric sounding component according to claim 13, wherein a center line extending in a gap between the two wall portions of the guide portion bends to guide the rising portion towards the diaphragm.